Home / 122,319.85-183,479.78-103,657.45

Finding the Fourth Proportional to 122,319.85, 183,479.78 and 103,657.45

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Solution

The fourth proportional to 122,319.85, 183,479.78 and 103,657.45 is: 155,486.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,319.85 : 183,479.78 = 103,657.45 : x
  2. Step 2: Convert to fraction form
    122,319.85/183,479.78 = 103,657.45/x
  3. Step 3: Cross multiply
    122,319.85x = 183,479.78 × 103,657.45
  4. Step 4: Simplify right side
    122,319.85x = 19,019,046,121.36
  5. Step 5: Solve for x
    x = 19,019,046,121.36/122,319.85
  6. Step 6: Final answer
    x = 155,486.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.